Pronunciation: (OOz),[key] —n. 1. Also called Great Ouse. a river in E England, flowing NE to the Wash. 160 mi. (260 km) long.
2. a river in NE England, in Yorkshire, flowing SE to the Humber. 57 mi. (92 km) long.
3. a river in SE England, flowing S to the English Channel. 30 mi. (48 km) long.